Properties of the Number 81676

Eighty-One Thousand Six Hundred Seventy-Six

Basics

Value: 81675 → 81676 → 81677

Parity: even

Prime: No

Previous Prime: 81671

Next Prime: 81677

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 7 × 2917

Divisors: 1, 2, 4, 7, 14, 28, 2917, 5834, 11668, 20419

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011111100001100

Octal: 237414

Duodecimal: 3B324

Hexadecimal: 13f0c

Square: 6670968976

Square Root: 285.7901327897799

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Triangle read by rows: T(n,k) is the number of multigraphs without loops on n labeled nodes with k edges and maximum degree 2. A95693

Admirable Harshad numbers n such that the subtracted divisor is equal to the digital sum of n. A111948

Number of (w,x,y,z) with all terms in {1,...,n} and w >= harmonic mean of {x,y,z}. A212107

Composite n such that (n-1)*φ(n) is a perfect square. A69953

Slowest increasing sequence all of whose successive digits are the digits of the Fibonacci numbers. A105967

Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite MEI = ZSM-18 Nan[AlnSi34-nO68].28H2O (n=2.1-5.7) starting with a T3 atom. A19147

Largest perfect power <= n. A81676